Nut-lock.



P. L. MANLET.

NUT LOCK.

APPLIOATION FILED APR. 24, 1909.

Patented Mar. 22, 1910.

' 8110244 on @5122 A WiiZiZj PETER L. MANLET 0F ST. Prion, MINNESOTA.

Nor-Lock.

Application filed April 24;

Specification of Letters Patent.

1909. Serial No. 491,960.

the axle nut after the latter has been properly positioned upon the axle thereby preventing possible displacement of the axle nut either by accident or by design of anyone bent upon mischief.

In accordance with this invention a key operated lock mechanism is located Withln the axle and cooperates with a lock bolt which -is adapted to be projected into an opening in communication with the thread-. ed openin of the axle. nut to secure the. latter'agalnst further movement in either direction when arranged upon the extremity of the axle arm to retain the vehicle wheel in place thereon. h

The improvement consists of the novel features details of construction and combination of parts which hereinafter will be more particularly set forth illustrated in the drawings hereto attached and finally pointed out in the appended claim.

Referring to the drawings forming a part of the specifications, Figure 1 is a central longitudlnal section of the outer'portion of an axle arm provided with a nut locking mechanism embodying the invention. Fig. 2 is a transverse section on the line 2-2' of Fig. 1. Fig. 3 is a perspective view of the end portion of the axle having the dust cap removed and showing the key in position.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings with the same reference characters.

The axle arm 1 may be of any type or construction and is provided at its outer end with a reduced portion 2 exteriorly threaded u on which the axle nut 3 is mounted. longitudinal opening 4: '6X- tends inward from the outer end of the axle arm and is adapted to receiveakey open ated lock mechanism 5 of the cyllnder typ and comprising a casing 6 and a' rotarybolt 7 the latter being provided with the usual Patented Mar. 22, 1910..

spring actuated pins of the well known 'Yale lock type and having a key 0 ening to receive the key 8 by means of which the rotary bolt 7 is operated. The casin 6 is secured within the opening 4 in any su stantial way as by means of a pin 9 which is received in registering openings formed in the casing 6 and threaded end 2 of the axle arm. To prevent displacement of the pin ,9 it may be threaded either, into the casing or axle arm or both.

The axle nut 3 when screwed home upon the threaded end 2 of the axle arm is held in place by means of a lock bolt 10 which operates freely in registering ,openingsll and 12 provided respectively .in the threaded end 2 of the axle arm and in a side of the axle nut 3;. A link 13 connects the lock bolt 10 with the rotary bolt 7 said link having eccentric connection with said rotary bolt at 14. When the rotary bolt 7 is turned ,to one position the lock bolt 10 is projected from the opening 11 of the axle arm into the opening 12 of the axle nut thereby securing a the latter. against rotation. When the lock.

bolt is projected into locked engagement with the axle nut the rotary bolt 7 is locked by the pins cooperating therewith in the manner well understood. When the rotary bolt is turned to the other extreme position the lock bolt 10 is withdrawn from the opening 12 of the axle nut and the latter is free to be turned so as to be removed from the axle arm. The rotary bolt 7 may be turned only by means of the key 8 in the manner well understood. The cap 15 is removed when access to the lock mechanism is desired to release the axle nut. After the key 8 has been-introduced into the key open ing of the rotary bolt 7 the latter is released and may be rotated, thereby withdrawing the lock bolt 10 from engagement with the axle nut, so that the latter may be turned 01f or on as desired. When the axle nut is in position upon the axle arm the rotary bolt 7 is turned to roject the lock bolt into the opening 12 o a the axle nut, thereby securing the latter against rotation in elther direction. I

The threaded opening of the tends entirely therethrough and in order to protect the key opening of the lock mechan- 1SII1'5 the cap 15 is fitted upon the axle nut and may be secured in place thereon in any axle nut exits way into the lock mechanism and interfering with the free operation thereof.

From the foregoing description, taken in connection with the accompanying drawing, the advantages of the construction and of the method of operation will be readily apparent to those skilled in the art to which the invention appertains, and while I have described the principle of operation of the invention, together with the device which I now consider to be the best embodiment thereof, I desire tov ave it understood that the device shown is merely illustrative, and

that such changes may be made when desired as are within the scope of the'claim ap ended hereto.

'laim. i

In combination with an axle arm having its outer portion reduced and externally threaded and formed with. a longitudinal opening extended inward from its extremity, a lock mechanism comprising 'a'casing and a rotary bolt inserted in the opening of the axle arm, a pin for securing the ock mechanism within the axle arm, a lock'bolt adapted to operate in a transverse opening formed in the threaded end portion of the axle .arm, a link connectin the lock bolt with the rotary bolt of the lock mechanism and having eccentric connection with said rotary bolt, an axle nut adapted to screwupon the threaded end of the axle arm and havin' an openingto receive the projected end 0 the lock bolt, and a key for operating the lock mechanism.

In testimony'whereof I afiix my signature in presence of two witnesses.

PETER L. MANLET.

Witnesses:

ROBERT MEAGHAM,

A. F. MASCHGEIR. 

